Oral isotretinoin is the best treatment for patients with moderate acne in whom antibiotics are unsuccessful and for those with severe inflammatory acne. Dosage of isotretinoin is usually 1 mg/kg once/day for 16 to 20 wk, but the dosage may be increased to 2 mg/kg once/day.
Lots of different predators will prey upon other predators: Golden eagles are well known predators of smaller hawks. Collared lizards will eat other lizards. Crocodilians will feed on other predators, such as monitor lizards, snakes and even lions that come to the water to drink. Many snakes will eat other snakes. Some frogs, like the horned frogs of South America and the African bullfrog, readily feed on other frogs.
Day predators can be hawks, rats, domestic or wild cats, dogs, foxes, weasels or anything in that size range that is native to your area. Night predators might be all above but a hawk; plus skunk, opossum, raccoon, coyote, owls. What causes a predator to only eat the guts is generally its hunger level. The hungrier the predator, generally the more of the prey it will consume. Depending on the size of the predator and its ability to carry off the chicken, it may have been interrupted during its meal, or just had enough.